The ReadyLIFT 4" Coil Spring Suspension System With Falcon 3.3 Shocks and Radius Arms combines a tall lift with Falcon performance shocks chosen for this truck. The shocks are part of the system, so the damping is matched to the lift from the start. ReadyLIFT system 43-27440 is engineered for the 2017-2022 Ford F-250 Super Duty and F-350 Super Duty.
What's Included:
| Kit components (ReadyLIFT) |
|---|
| 4" Lift Springs |
| Falcon3.3 Monotube Front and Rear Shocks |
| Track Bar Relocation Bracket |
| Radius Arm |
| Dual Steering Stabilizer |
| Sway Bar Drops |
| Bump Stop Extensions |
| Carrier Bearing Drop |
| Front Brake Line Brackets |
| Fabricated Rear Lift Blocks |
| Hardware Pack |
Wheels, tires, alignment, headlamp aiming, ADAS recalibration and any trimming labor are not included.
Features
Falcon shocks in every system
Every system in this line includes Falcon performance shocks, ReadyLIFT's own damper line, selected for the truck and the lift height.
Tall lift, large tires
These systems deliver big-lift height and clear a large tire package. ReadyLIFT lists the tested tire size for each truck.
Geometry kept in check
Heavy-duty brackets, crossmembers, knuckles, radius arms or track bar brackets reposition the suspension so it works at the new height.
Tuned for mixed duty
ReadyLIFT pitches Falcon-equipped systems for daily driving, off-road trips and tow or haul work on the same truck.
Complete system per truck
Each system is engineered for one platform and ships with the components listed in its kit contents.
Fitment & Compatibility
Ford
| Years |
Model |
Notes |
| 2017-2022 |
F-250 Super Duty |
4WD only |
| 2017-2019 |
F-350 Super Duty |
4WD only |
| 2020 |
F-350 Super Duty |
Not for Tremor trim; 4WD only |
| 2021-2022 |
F-350 Super Duty |
4WD only |
Fit guidance: Fits: 2017-2022 Ford F-250 Super Duty/F-350 Super Duty, with the qualifiers shown. Check your vehicle's trim, drivetrain and factory suspension against these notes before ordering.
ReadyLIFT fit notes for this part
| Not recommended for 2WD or gas trucks |
Specifications
-
Brand: ReadyLIFT
-
Series: Falcon
-
Shocks: Falcon performance shocks included
-
Warranty: ReadyLIFT No Hassle warranty, original purchaser; shocks and other wear parts up to 1 year
-
Lift height: 4"
-
Install time (ReadyLIFT estimate): about 6.5 hours (give or take 1), alignment and wheel mounting extra
-
Shipping weight: 185 lb
-
Kit type: Suspension system
-
Largest tire: 37"
-
Alignment required: Yes, after installation
-
Install difficulty: Professional install recommended
-
Part number: 43-27440
Tire fitment (ReadyLIFT's published guidance for this kit)
| Recommended tire size: 37" - 12.5" |
| Recommended wheel: 17" and up x 9" wide, +25 offset / 6" backspacing (minor trimming of the front valance may be necessary) |
Tire and wheel sizes vary by manufacturer, so test-fit your combination before installation.
Installation
Type: premium suspension lift · Install: involved, per-vehicle install sheet · Afterward: alignment, headlamp aim, ADAS check
This system installs using the steps in ReadyLIFT's instructions for this truck, including any trimming the instructions call for. Plan on a wheel alignment after installation and have headlamp aim checked. Vehicles with camera, radar or sonar driver-assistance systems need those systems checked and recalibrated, which can require dealer tools. ReadyLIFT recommends installation by a certified mechanic and says to read the full instructions before starting. Tire sizes are ReadyLIFT guidance based on specific wheel and tire brands, so test fit every combination. Larger E-rated tires have stiffer sidewalls than stock C-rated tires and can make the ride feel firmer.
ReadyLIFT estimates about 6.5 hours for this kit, give or take 1 hour, not counting the alignment or mounting wheels and tires.
ReadyLIFT's installation instructions for this part number are linked under Resources. Read them fully before starting.
Resources
Warranty, Shipping & Returns
Warranty. ReadyLIFT backs this product with its No Hassle warranty for the original purchaser: if a part breaks or arrives defective, ReadyLIFT ships a replacement, and a claim starts with a call to 800-549-4620. Wear items such as the included shocks, ball joints and bushings are covered for up to one year. Damage caused by off-road abuse voids coverage. Discontinued, clearance and outlet items are excluded, as are labor, installation charges and consequential vehicle damage. Shipping. The carrier and ship method are set by the size and weight of the cartons when the order is placed; larger kits ship by freight. Inspect on delivery. Check every box and part against the kit component list when it arrives, and report any shortage or shipping damage before installation begins.
Returns. Unused items in their original packaging can be returned within 30 days of delivery. If an item arrives damaged, defective or wrong, return shipping is on us. See our Returns & Refunds Policy, or email support@prestigetruck.com with any question.
About ReadyLIFT
ReadyLIFT Suspension started in 2006 with one goal: give truck and SUV owners more tire clearance and a better stance while keeping the ride and handling their vehicle had from the factory.
What began as a practical option to traditional big lifts now spans front leveling kits, SST mild lifts, full big lift systems, premium coilover packages, upper control arms and Falcon shocks for popular trucks and SUVs.
Wheel Pros bought ReadyLIFT in 2018, and in August 2026 the brand joined Bestop Premium Accessories Group, which plans continued investment in engineering, product development, manufacturing and customer support.
